There is no point visiting in winter; everything is closed during off-season. Springtime is slow, and everything tends to be cheaper. Peak tourist season is the summer, when temperatures are fun but not harsh. Temperature breakdown by season are as follows:
Spring (March to April): Starts off chilly with daily means of 6 degrees Celsius, and gets warmer very gradually, for highs of 17 degrees Celsius in May.
Summer (June to August): Average highs are at around 21 during the hottest times; at night it's 10 degrees Celsius cooler. It’s the best weather to visit.
Autumn (September to November): The nights become chilly in September, at 10 degrees Celsius. Then the days follow, also dipping below 10 degrees Celsius in November, when the nights hover around 4 degrees Celsius.
Winter (December to February): Throughout winter, the mercury holds around 0 degrees Celsius at night, and 4 degrees Celsius in the daytime.